| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* Macros to support TLS testing in times of missing compiler support. */ |
| 2 | |
| 3 | #include <sys/cdefs.h> |
| 4 | #include <sys/asm.h> |
| 5 | |
| 6 | #define __STRING2(X) __STRING(X) |
| 7 | #define ADDU __STRING2(PTR_ADDU) |
| 8 | #define ADDIU __STRING2(PTR_ADDIU) |
| 9 | #define LW __STRING2(PTR_L) |
| 10 | |
| 11 | /* Load the GOT pointer, which may not be in $28 in a non-PIC |
| 12 | (abicalls pic0) function. */ |
| 13 | #ifndef __PIC__ |
| 14 | # if _MIPS_SIM != _ABI64 |
| 15 | # ifndef __mips16 |
| 16 | # define LOAD_GP "move %[tmp], $28\n\tla $28, __gnu_local_gp\n\t" |
| 17 | # else |
| 18 | # define LOAD_GP \ |
| 19 | "li %[tmp], %%hi(__gnu_local_gp)\n\t" \ |
| 20 | "sll %[tmp], 16\n\t" \ |
| 21 | "addiu %[tmp], %%lo(__gnu_local_gp)\n\t" |
| 22 | # endif |
| 23 | # else |
| 24 | # define LOAD_GP "move %[tmp], $28\n\tdla $28, __gnu_local_gp\n\t" |
| 25 | # endif |
| 26 | # define UNLOAD_GP "\n\tmove $28, %[tmp]" |
| 27 | #else |
| 28 | /* MIPS16 (re)creates the GP value using PC-relative instructions. */ |
| 29 | # ifdef __mips16 |
| 30 | # define LOAD_GP \ |
| 31 | "li %[tmp], %%hi(_gp_disp)\n\t" \ |
| 32 | "addiu %0, $pc, %%lo(_gp_disp)\n\t" \ |
| 33 | "sll %[tmp], 16\n\t" \ |
| 34 | "addu %[tmp], %0\n\t" |
| 35 | # else |
| 36 | # define LOAD_GP |
| 37 | # endif |
| 38 | # define UNLOAD_GP |
| 39 | #endif |
| 40 | |
| 41 | #ifndef __mips16 |
| 42 | # define TLS_GD(x) \ |
| 43 | ({ void *__result, *__tmp; \ |
| 44 | extern void *__tls_get_addr (void *); \ |
| 45 | asm (LOAD_GP ADDIU " %0, $28, %%tlsgd(" #x ")" \ |
| 46 | UNLOAD_GP \ |
| 47 | : "=r" (__result), [tmp] "=&r" (__tmp)); \ |
| 48 | (int *)__tls_get_addr (__result); }) |
| 49 | # define TLS_LD(x) \ |
| 50 | ({ void *__result, *__tmp; \ |
| 51 | extern void *__tls_get_addr (void *); \ |
| 52 | asm (LOAD_GP ADDIU " %0, $28, %%tlsldm(" #x ")" \ |
| 53 | UNLOAD_GP \ |
| 54 | : "=r" (__result), [tmp] "=&r" (__tmp)); \ |
| 55 | __result = __tls_get_addr (__result); \ |
| 56 | asm ("lui $3,%%dtprel_hi(" #x ")\n\t" \ |
| 57 | "addiu $3,$3,%%dtprel_lo(" #x ")\n\t" \ |
| 58 | ADDU " %0,%0,$3" \ |
| 59 | : "+r" (__result) : : "$3"); \ |
| 60 | __result; }) |
| 61 | # define TLS_IE(x) \ |
| 62 | ({ void *__result, *__tmp; \ |
| 63 | asm (".set push\n\t.set mips32r2\n\t" \ |
| 64 | "rdhwr\t%0,$29\n\t.set pop" \ |
| 65 | : "=v" (__result)); \ |
| 66 | asm (LOAD_GP LW " $3,%%gottprel(" #x ")($28)\n\t" \ |
| 67 | ADDU " %0,%0,$3" \ |
| 68 | UNLOAD_GP \ |
| 69 | : "+r" (__result), [tmp] "=&r" (__tmp) \ |
| 70 | : : "$3"); \ |
| 71 | __result; }) |
| 72 | # define TLS_LE(x) \ |
| 73 | ({ void *__result; \ |
| 74 | asm (".set push\n\t.set mips32r2\n\t" \ |
| 75 | "rdhwr\t%0,$29\n\t.set pop" \ |
| 76 | : "=v" (__result)); \ |
| 77 | asm ("lui $3,%%tprel_hi(" #x ")\n\t" \ |
| 78 | "addiu $3,$3,%%tprel_lo(" #x ")\n\t" \ |
| 79 | ADDU " %0,%0,$3" \ |
| 80 | : "+r" (__result) : : "$3"); \ |
| 81 | __result; }) |
| 82 | |
| 83 | #else /* __mips16 */ |
| 84 | /* MIPS16 version. */ |
| 85 | # define TLS_GD(x) \ |
| 86 | ({ void *__result, *__tmp; \ |
| 87 | extern void *__tls_get_addr (void *); \ |
| 88 | asm (LOAD_GP ADDIU " %1, %%tlsgd(" #x ")" \ |
| 89 | "\n\tmove %0, %1" \ |
| 90 | : "=d" (__result), [tmp] "=&d" (__tmp)); \ |
| 91 | (int *) __tls_get_addr (__result); }) |
| 92 | # define TLS_LD(x) \ |
| 93 | ({ void *__result, *__tmp; \ |
| 94 | extern void *__tls_get_addr (void *); \ |
| 95 | asm (LOAD_GP ADDIU " %1, %%tlsldm(" #x ")" \ |
| 96 | "\n\tmove %0, %1" \ |
| 97 | : "=d" (__result), [tmp] "=&d" (__tmp)); \ |
| 98 | __result = __tls_get_addr (__result); \ |
| 99 | asm ("li $3,%%dtprel_hi(" #x ")\n\t" \ |
| 100 | "sll $3,16\n\t" \ |
| 101 | "addiu $3,%%dtprel_lo(" #x ")\n\t" \ |
| 102 | ADDU " %0,%0,$3" \ |
| 103 | : "+d" (__result) : : "$3"); \ |
| 104 | __result; }) |
| 105 | # define TLS_IE(x) \ |
| 106 | ({ void *__result, *__tmp, *__tp; \ |
| 107 | __tp = __builtin_thread_pointer (); \ |
| 108 | asm (LOAD_GP LW " $3,%%gottprel(" #x ")(%1)\n\t" \ |
| 109 | ADDU " %0,%[tp],$3" \ |
| 110 | : "=&d" (__result), [tmp] "=&d" (__tmp) \ |
| 111 | : [tp] "d" (__tp) : "$3"); \ |
| 112 | __result; }) |
| 113 | # define TLS_LE(x) \ |
| 114 | ({ void *__result, *__tp; \ |
| 115 | __tp = __builtin_thread_pointer (); \ |
| 116 | asm ("li $3,%%tprel_hi(" #x ")\n\t" \ |
| 117 | "sll $3,16\n\t" \ |
| 118 | "addiu $3,%%tprel_lo(" #x ")\n\t" \ |
| 119 | ADDU " %0,%[tp],$3" \ |
| 120 | : "=d" (__result) : [tp] "d" (__tp) : "$3"); \ |
| 121 | __result; }) |
| 122 | |
| 123 | #endif /* __mips16 */ |